Cell standby. - Redmi K20 / Xiaomi Mi 9T Questions & Answers

So i've been going around seeing people having issues with cell standby having high battery usage ( i'm at around 30% myself) , is this issue ever going to get resolved cause i've seen it being mentioned way back in the mi 8 days around 1 year ago.

solution (maybe)
I had this problem too, I disabled NFC and that worked. But I'm on xiaomi.eu after I tested all other roms to solve the problem. thus I don't know if it's only related to NFC.

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Battery draining even while the note is turned off or in airplane mode.

Is there anybody else with this problem.It started monday i turned my phone on but it didn't start.The battery was 0% while i shutted it down with 78% of juice left.I charged the battery but it drains down real fast!Even with the screen off at night and no wifi or edge/3g/4g i still lose about 10% every hour!
I've used the note for two weeks without any problem.Rooted with Xposed Greenify and most of the bloatware disabled.Same setup as my Notepro 12.2 and galaxy mega(no problems with those devices).Battery life was pretty good about 5 a 6 hours of screen on time.
Tried better battery stats but no particular wakelocks or anything??I've ordered a new battery and that will arrive tomorrow.I can do a test then if it is the battery or the phone which is causing this problem.
It's a note 4 910c.
I have similar problem with my 910C...Everything was ok for first two weeks and problems started when I enabled LTE at my mobile operator. No matter what I do, I have huge battery drain like you said. I've also tried with disabling 4G/wifi/data/sync/airplane mode/removing apps... I even tried factory resetting 2-3 times and flashing stock rom via odin...Nothing helps...
I'm looking around on various note4 forums but I'm getting out of ideas...
I had an initial battery drain issue which ive managed to resolve. Took a few factory resets but for me it looked like the galaxy apps ap. Once you open it a single time it updates a few things and thats when i started to see wakelocks. Ive reset and avoided the galaxy apps completely and now wakelocks have gone. Might be a placebo but seems to work for me.
I have 2g,3g and lte enabled.
Oke i enabled 4g from the first time i used it so i don't think that is the problem.I was thinking about a factory reset but i'll wait with that untill i tested the new battery.
Will give a update tomorrow!
I had the same problem after one week of normal use. It was a hardware issue and the service center changed the phone board under warranty.
Well tried a brand new battery but still the same!Lose at least 10% every hour and i am not even touching the phone!!Sending it back for another one.
It's happened to me once but touch wood only once where I lost 70% overnight in airplane mode
Could be the media scanner? I was having media server and scanner drains until I installed a custom rom and disabled it.

Cell standby / bluetooth battery drain?

I keep seeing a huge battery drain from "cell standby" and "bluetooth".
I have wi-fi on all the time, I use bluetooth only when driving (no streaming), and I tried Greenify with no improvement.
Are there any known bugs with this? I am running 6.0.1 on T-Mobile.
priapism said:
I keep seeing a huge battery drain from "cell standby" and "bluetooth".
I have wi-fi on all the time, I use bluetooth only when driving (no streaming), and I tried Greenify with no improvement.
Are there any known bugs with this? I am running 6.0.1 on T-Mobile.
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Click to collapse
I rarely use bluetooth but I do have high cell standby like yours. I also have no idea why since it happened to other androids out there even on nexuses and it seems started since lollipop. my guess is, it happened in previous android versions but not displayed until lollipop. I don't care much about it now since I'm getting around 6 hours of SOT within 2 days of usage which is great, at least for me.
I get about 2.5 hrs SOT and have to top up in the evenings pretty often. For a 48-hour rated phone, I feel like something's not right.
What kind of bike is that?
priapism said:
I get about 2.5 hrs SOT and have to top up in the evenings pretty often. For a 48-hour rated phone, I feel like something's not right.
What kind of bike is that?
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Click to collapse
Judging from your screenshot, it looks like the phone was struggling with cell signal strength. This is one of the main battery drainer other than gps and playing games. When the signal strength is low, the phone increases the radio power to get better reception, thus draining battery faster.
it's a suzuki gsx650f
Same issue with mine as well, battery drains like hell from this bug but tower is always full. I use vodafone.
This did happen to me in the last one week. I got only 3.5 hrs screen on time, however my phone went three days without charge (I didn't use it much anyway, was busy with work). Checked BetterBatteryStats on my phone and it showed the poor mobile signal to be one of the major battery drainers. It's weird because until 10 days back I never had this poor mobile signal reception.
3.5 hours SOT within 3 days is considered great already. Some phones barely last a day with that amount of SOT.
i've also had this problem since i bought this phone. My mobile standby is always over 10-15% when the signal is always full and there is never a single bar drop. I've tried switching to 2g/3g/4g but problem persists every time. I've also tried many custom roms but this problem remains. I think this has to do something with hardware of this phone. I cant even get it replaced or repaired at service centre since i've rooted and unlocked boot loader. If anybody finds a solution please post. It will be much appreciated.
I also had this problem initially.To get rid of this problem put your phone in airplane mode for few minutes,then turn your mobile network on.For the bluetooth issue,go to settings - location - three dots top right - scanning - uncheck WiFi and Bluetooth.
effingbadluck said:
I also had this problem initially.To get rid of this problem put your phone in airplane mode for few minutes,then turn your mobile network on.For the bluetooth issue,go to settings - location - three dots top right - scanning - uncheck WiFi and Bluetooth.
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Click to collapse
thanks a lot man. this actually solved the problem, I would have never though the solution was so easy, although I have to repeat the procedure with every reboot but its still better than nothing. I do hope devs come up with a permanent solution to this issue.

Marshmallow wifi battery drain bug..

After installing marshmallow to note 4 910F, I found out to much battery consumption.. It was more obvius when i left phone at night, connected with my wifi router. It had 20-30% battery consumption at 7 hours. Phone on, wifi on, rest off.
If i turn off wifi, no battery drain.. I loose 3%.
Even with 4G on, and wifi off, i loose much less!!
I tried more than 4 roms 6.01, factory erased everything, even safe mode. Always wifi drain.
In lolipop i had about 3% drain with the same.
Searching in net, i found out same problems mostly with nexus (probably because they had first of all marshmallow and they find it first..). I also found the same for note 5.
Many say to set router to 2.4 gihahz, set static ip, turn off something like v6 ip protocol? I don't remember well.
Also i read, mostly problem exists if router have huawei chip.
Checked mine, and it did had huawei chip..
Anyway i didn't found a solution for this. Tried better battery stats and found out tha alarms was for long time. Sleep was 85%, when normal would be 97%.
I also have a photo showing bigger drain in wifi than 4G.
Anyway how problem solved? I changed router and with everything same, i loose 3%....
But when i connect to other routers coffe, etc, if they have the same chip i still have drain there.
I probably find out the problem in note 4 first of all, as i dont read anything searching so, i inform others here.
note marshmellow battery drain
hope this helps. had the same problem of battery drain and not being able to put phone in power saving mode. i stumbled upon things that the update cuts on and you have no idea, anyway, it seems that the update has the search for other devices running 24/7 and you have to go in and switch it off. since then power mode has been enabled and stays on and battery life is back.
hello , guys .. beezyb can you explain with steps ?! you said that it seems that the update has the search for other devices running 24 hours / 7 days and i have to go in and switch it off ... bla bla .. what you mean with that ? !! can you help me ? !

Battery meter goes crazy since update (YB1-X90F_170420)

Does anyone have the same issue and knows what to do?
Since the update it
a) drains while not in use (depletes the battery jn 5 days without use approximately)
b) Rapidly goes from 90% to 60, suddenly drops to 30
c) Suddenly goes back uo to 60%
It seems as if the battery meter has gone absolutely crazy...
Should I contact Lenovo Support or is this a known bug that has a workaround or solution?
I can not confirm this.
But in my case I have done a hard reset. Maybe its also an option for you?
I don't have the erratic meter issue, but mine *does* drain the battery during sleep. The WiFi stays on, even though I have it set to "never".
I haven't noticed this problem. Various devices in my past have seen similar issues following an update before. A factory reset should resolve it, unless your battery has a physical problem.
First couple of days after the update I felt like my battery was draining faster, but that belief was corrected with use. Thankfully.
You can turn off WiFi scanning. This will shut down WiFi properly.
The one I have must be a freck I fully charge it and get 4 days of regular use........
Did you update to 170519? Maybe the problem is solved then.

Cell standby killing the battery

recently i encountered a lot of battery drain even without using my phone ( galaxy s8 dual sim ) i noticed that cell standby is using a lot of battery sometimes as much as if not greater than the screen it self which is weird because my signal is ok i dont think ian losing signal
anybody having this problem ??
alaa96 said:
recently i encountered a lot of battery drain even without using my phone ( galaxy s8 dual sim ) i noticed that cell standby is using a lot of battery sometimes as much as if not greater than the screen it self which is weird because my signal is ok i dont think ian losing signal
anybody having this problem ??
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Click to collapse
The image shows the phone was without signal for some time which was about 32% and it will consume power. Don't know the reason behind this, but if phone really had no signal for a long time, then be in another place where there is a good signal and test there. I have seen few times with my old Moto X, that sometimes after using internet via mobile network(without wifi), the connecting would somehow still be open and it would consume battery and the way to fix this, I had to restart the phone.
Charkatak said:
The image shows the phone was without signal for some time which was about 32% and it will consume power. Don't know the reason behind this, but if phone really had no signal for a long time, then be in another place where there is a good signal and test there. I have seen few times with my old Moto X, that sometimes after using internet via mobile network(without wifi), the connecting would somehow still be open and it would consume battery and the way to fix this, I had to restart the phone.
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Click to collapse
this is ridiculous ! i never had an issue like this with any of my older phones
best bet do a factory reset and see if it still persists
Same happens to me too. Yesterday I went outside my house and traveling in the city - my battery went from 100% to 43% in 6h40min. I had SOT only 1h. I am wondering if something related to GPS is killing the battery as it always drain very fast if i am moving - but in the other hand it seems that phone radio is draining also the battery a lot. Any advices what could I do?
varun.gid said:
best bet do a factory reset and see if it still persists
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i already did it but no good i think this problem happened after an update
nixun said:
Same happens to me too. Yesterday I went outside my house and traveling in the city - my battery went from 100% to 43% in 6h40min. I had SOT only 1h. I am wondering if something related to GPS is killing the battery as it always drain very fast if i am moving - but in the other hand it seems that phone radio is draining also the battery a lot. Any advices what could I do?
Click to expand...
Click to collapse
cell standby is not related to gps and location services i dont think so at least iam pretty sure it is mainly phone network related
Cell standby drains too much battery
I'm using Galaxy S8 Exynos Version (Dual Sim). Facing this cell standby extreme battery drain issue recently. I have tried several options like- reset network settings, restart / power off-on, factory reset and wipe cache partition to see if the problem goes away or not. These things can solve the problem only for 2-3 days. Then after that same cell standby battery drain occurs again. The only thing left is to hard reset. But I don't think this will solve the problem either. These are not the permanent solution. When I first got the phone this problem was not there. For the last 2-3 weeks I have been facing this issue and it is bothering me a lot coz my battery drains too much even when i'm not using my phone. I really need a solid solution for this. Can anybody help? And I hope Samsung will address this issue and solve it asap.
I think cell standby is the worst problem in the S8. It really kills battery. It can make your phone drop 2% per hour.
Same issue here. Didn't have this issue before the latest two updates. Before I had 6-7 SoT and now barely 2-3 hours.
yes, this issue was not pronounced before the latest updates (one or two as mentioned)
Same thing here. After the last update there is a battery problem with standby. Hope they fix it with next release.
same with my s8+ dual exynos

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